Issue #10: Make playbook work well on Ubuntu hosts.

README.md

@@ -156,6 +156,14 @@ ansible-playbook networking.yml
 
 After running the playbook, until a reboot, the Pis will still be accessible over their former DHCP-assigned IP address. After rebooting, the nodes will be accessible on their new IP addresses.
 
+You can reboot all the nodes with:
+
+```
+ansible all -m reboot -b
+```
+
+> If you are running Ubuntu, and you get an error like `"Failed to find required executable "nmcli"`, run the `ubuntu-setup.yml` playbook: `ansible-playbook tasks/networking/ubuntu-prep.yml`
+
 #### If using a different subnet
 
 If you chose a different subnet than your LAN, make sure your workstation is connected to an interface on the same subnet as the cluster (e.g. `10.1.1.x`).

example.config.yml

@@ -19,7 +19,9 @@ drupal_extra_settings_php: ''
 # remote networking features in the `tasks/networking` playbooks.
 ipv4_subnet_prefix: "10.1.1"
 ipv4_gateway: "10.1.1.1"
+dns4_servers: "{{ ipv4_gateway }}"
 active_internet_interface: "wlan0"
 reverse_tunnel_enable: false
 reverse_tunnel_vps_username: my-vps-username
 reverse_tunnel_vps_hostname: my-vps-hostname
+control_plane_router_setup: false

networking.yml

@@ -8,3 +8,4 @@
 
 - name: Configure control plane as a router.
   import_playbook: tasks/networking/router.yml
+  when: control_plane_router_setup

tasks/networking/static-networking.yml

@@ -43,6 +43,7 @@
         type: ethernet
         ip4: "{{ ipv4_subnet_prefix }}.{{ ip_host_octet }}/24"
         gw4: "{{ ipv4_gateway }}"
+        dns4: "{{ dns4_servers }}"
         state: present
       notify: restart networkmanager
       when: not dhcpcd_file_result.stat.exists

tasks/networking/ubuntu-prep.yml

@@ -0,0 +1,34 @@
+---
+- name: Prepare Ubuntu for static networking.
+  hosts: cluster
+  gather_facts: false
+  become: true
+
+  vars:
+    netplan_file: /etc/netplan/50-cloud-init.yaml
+
+  tasks:
+    - name: Ensure NetworkManager is installed.
+      ansible.builtin.apt:
+        name: network-manager
+        state: present
+        update_cache: true
+
+    - name: Configure netplan file for NetworkManager.
+      ansible.builtin.copy:
+        dest: "{{ netplan_file }}"
+        mode: 0600
+        content: |
+          # ANSIBLE MANAGED - netplan configuration
+          network:
+            version: 2
+            renderer: NetworkManager
+
+    - name: Regenerate netplan config.
+      ansible.builtin.command: "{{ item }}"
+      with_items:
+        - sudo netplan generate
+        - sudo netplan apply
+
+    - name: Reboot.
+      ansible.builtin.reboot:

tasks/storage/filesystem.yml

@@ -3,7 +3,7 @@
   ansible.builtin.file:
     dest: "/{{ storage_nfs_dir }}/{{ storage_nfs_share_name }}"
     owner: root
-    group: pi
+    group: "{{ ansible_user }}"
     state: directory
     mode: 0777